2544743 has 4 divisors (see below), whose sum is σ = 2655408. Its totient is φ = 2434080.

The previous prime is 2544739. The next prime is 2544757. The reversal of 2544743 is 3474452.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2544743 - 2² = 2544739 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2544733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55298 + ... + 55343.

It is an arithmetic number, because the mean of its divisors is an integer number (663852).

2^2544743 is an apocalyptic number.

2544743 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2544743 is a deficient number, since it is larger than the sum of its proper divisors (110665).

2544743 is a wasteful number, since it uses less digits than its factorization.

2544743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110664.

The product of its digits is 13440, while the sum is 29.

The square root of 2544743 is about 1595.2250624912. The cubic root of 2544743 is about 136.5257725714.

The spelling of 2544743 in words is "two million, five hundred forty-four thousand, seven hundred forty-three".